MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to redirect users. The PDF structure and embedded URLs are indicative of a phishing or malware distribution campaign, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9922
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://haltia.mx/sii/ckfinder/userfiles/files/59585956971.pdf
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c661d242fef---tibuwaferipojenurena.pdf
- https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a7137ab85---nijijimeden.pdf
- https://edu-mate.kr/_UploadFile/Images/file/62339388984.pdf
- https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/ec9fc47a9ad2d4c8bc6a1115b6c0132f/45260634282.pdf
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1606faba61d071---59804387302.pdf
- https://an-professional.ru/img/files/file/43331762002.pdf
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16082ef13efe2c---lidaxew.pdf
- http://www.peretprod.ro/content-images/file/fokukedepiniduvifawofezej.pdf
- https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/85703f0c78c300483feb680f9ecd084d/demanelaguzalobufuga.pdf
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607718677743e---88228835823.pdf
- http://akkoryazilim.com/userfiles/file/25789135895.pdf
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a752dce5704---naluforida.pdf
- https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/1c15d3c81d00155013fc9951e1c70b3e/93608629606.pdf
- http://naturallabs.fr/userfiles/file/zalutokatosuguzig.pdf
- http://zerosquareonline.com/file/94398081796.pdf
- http://titadoorbinhduong.com/upload/files/reremegawosedito.pdf
- http://coffee33.ru/archive/file/tunirurix.pdf
- https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/19b7180fb4a93cbc5f6e23c99857c6b5/fugijumedozosezozirorux.pdf
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/rrco0f527ivotkog6ugjhccu4u/jakekugefedobimefi.pdf
- http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/bb491ca9f7258dcc243cfc109f2fd9bc/vumezigapepojukibetik.pdf
- http://treeoflifetolfu.com/clients/0/07/07f122ebb3396bb3f917f2e62af81596/File/7347614096.pdf
- https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/9k1en5v3ve1i1oilr2vhpekvse/wigekikimabiwudaboxon.pdf
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608d8ed67c09c---22539744673.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=formula+for+ionisation+energy
- https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/a9a6d38c16e7cb21c75b38629bb05a96/91528843717.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00012183.binf7ca9b2852791880c626a7f5ad3e72beef7d871f9f50cd4221b4f766ae9b65f2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12183 | 18280 bytes |
font_01_sfnt_off0001523a.bin81b6f582423ac0e4ec1cd10f8de9d814de13388da9ee9eed519b840c4cce44e2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1523A | 10748 bytes |
font_02_sfnt_off00016af4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16AF4 | 16792 bytes |
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